Woven fabric



W. F. GRUPE.

WOVEN FABRiC.

APPLICATION man 1An.25.\9|a.

1,319,768. Patented our. 28,1919.

UNITED sTATEs PATENT oEEIcE.

WILLIAM F. GRUPE, OF NORTH BERGEN, NEW JERSEY, AVSSIGNOB T0 ENDLESS BELTCORPORATION, INC., A. CORPORATION 0F NEW YORK.

WOVEN FABRIC.

Specification of Letters Patent.

Patented Oct. 28, 1 919.

Application led January 25, 191B. Serial` Illu, 213m.

To all 'whom it may concern.'

Be it known that I, WILLIAM F. GEUPE, a citizen of the United States ofAmerica, residingat Hudson Boulevard, North Bergen, New Jersey, haveinvented certain new and useful Improvements in Woven Fabrics, of whichthe following is a s ecification.

This invention relates to tu e belts or forming bands for cigarettemaking machines.

An object of this invention is to rovide a construction of tube beltsyor arming bands for cigarette making machines of greater effectivelife. In the use of tube belts or forming bands, for making cigarettes,a shoe or former is employed through which th l belt. or band travels.In such use of tube belts a strip of paper of indefinite length is fedon the belt, and the cigarette tobacco fed on the strip, and u on travelof the belt through the shoe, the be t is curved to form a tube therebyrolling the cigarette paper and to acco contained therein, and uponapplication of adhesive, a cigarette of indefinite len h is formed,which is cut to desired lengt s to form individual cigarettes.

Under such circumstance 'of use, the belt is brought into frictionalengagement with the sides of the shoe and owing to the woven structureof heretofore employed belts, the life of the belt is of' shortduration.

In accordance with this invention, the belt is woven endlessly and thewoven` structure of the belt is formed of warp and weft threads arrangedone under and one over, respectively, or the purpose of attainingflexible ed e portions of the band, extending respective y lengthwiseofthe band, and for the additional purpose of imparting greater tensilestren h to the centralportion of the band` exten ing lengthwise of theband, the central portion is woven of double wa threads passing underand over single we threads. The warp threads are referwbly ofsubstantially uniform thic ess or diameter andpf a continuous threadextending in convolutions, each convolution being substantially thelength of the resultant belt. The weft threads are also preferably ofsub stantially uniform thickness or diameter.

Further features and objects of the'invention will be more fully'understood from the following description and the accompanying drawings,in Which- Figure 1 shows diagrammaticall an endlessly woven cigarettebelt emb ying my invention; and

Fig. 2 is a detail lan view, on an enlarged scale, of a pre erred formof the invention, showing the weaving structure.

Referring to the drawings, the belt 1 is continuous, and preferablycontinuously woven and accordingly Without any termination. The widthand length of the belt are varied, as desired.

This invention pertains particularly to,

belts for use in cigarette making machines of the usual type, embodyinga forming shoe through which the belt passes. The `belt serves to feed astrip of pa er of indefinite length, on which is fed the cigarettetobacco.

Upon travel of the belt through the forming shoe, the edge portions ofthe belt are curved upwardly, to thereby roll the paper strip andtobacco contained thereon into a tube or cigarette of indefinite length,which is cut by? suitable severing means into individual cigarettes.Suchbelt is known in the trade as a forming band or tube belt.

I have discovered that the provision of a plurality of warp threads forthe central portion of the belt, passing longitudinally of the belt,assing under and over the' single weft threa s, and the weft threads fdrsuch central `portion passing under and ov r such plurality of warpthreads, effects i great increase in the tensile strength of theresultant belt and a consequent increased :life of the belt. Suchconstruction serves also to maintain a uniform feeding of the strip ofpaper and to maintain auniform discharge o the formed cigarette throughthe forming s oe.

As indicated in Fig. 2, the edge portions of the beltare preferablyformed of a weaving structure comprising single weft threads passingunder and ci er single warp threads and single warp threads passingunder and over single weft threads. Such preferred construction. effectsincreased pliabilit of the oppositely disposed edge portions of thebelt, whereby7 the curving action of the belt in the forming shoe isenhanced, with decreased frictional engagement with the curved sides ofthe forming shoe, thereby further increasingr the life of the belt.

In the specific form of the invention shown in Fig. 2, the belt isendlessly woven by winding the warp threads L). continuously asconvolutions, each convolution beinr substantially equal to the lengthof the resultant belt, the weft threads 3 being successively interlacedtherewith to form the end le-ssly woven belt. The weaving structure ispreferably ot' the. simple weave, that is, the weft threads and warpthreads extending substantially at right angles to one another, asdisclosed in my co-pending application entitled Cigarette conveyor band,Serial Number 137,949, tiled by me on the 20th day of December, 1916.

The weaving structure of the central portion (i of the belt l as shownin Fig. coinprises two single warp threads 7, T, whereas the outer oredge portions of the belt comprise but single threads 8. The weftthreads 9 for the central portion of the belt are passed as singlethreads under and over such two single warp threads 7, and for the outeror edge portions, the weft threads 7 pass under and over single warpthreads 8.

The band or belt is subjected to a inishing treatment under increasedtemperature condition and with or Without a suitable binding orfinishing material, as understood single threads if desired and that thedirect-ion of extension may be transverse of the direction of length ofthe fabric other than at right angles.

Whereas 1 have described my invention by reference to specific formsthereof, it will be understood that many changes and modificatiorismayVbe'made without departing from the spirit oi'sthe invention as definedby the appended claims.

I claim:

1. A cigarette forming band, woven endv lessly comprising an innerportion having a. weaving structure ot' single weft threads each passingunder and over two warp threads, aml ot' warp threads each passing underand over single. weft threads and outer oppositely disposed edgeportions having a weaving structure of single warp threads passing underand over single weft threads and single weft threads passing under andover single warp threads.

2. A cigarette forming band, woven endlesslv. comprising an edge portionhaving a weaving structure ot' each weft thread passing under one andover one warp thread and ot' each warp thread passing under and over om`weft thread and comprising a central portion having a weaving structureof each wet't thread passing under and over two warp threads and eachwarp thread passing under land over one weft thread.

:L A cigarette forming band comprising opposite edge portions, each edgeportion having a weaving structure ot' each weft thread passing underand over single warp threads and each warp thread passing under and oversingle weft threads. and a portion disposed substantially centrally ofsaid edge portions and having a weaving structure of single weft threadseach passing under and over two Warp threads and each war thread passingunder and over single we t threads.

4. A cigarette formingl band extending endlessly, comprisingedgeportions having a weaving structure of singlewarp threads passingunder and over single weft threads and single weft threads passing underand over single warp threads and a central portion having a weavingstructure formed of a greater number of warpn threads passin under andover a lesser nu-mber of we t threads respectively and a lesser numberof weft threads passing under and over a greater number of warp threadsrespectively.

5. An endless cigarette forming band comprising opposite edge portions,each edge portion having a weaving lstructure of single weft threadspassing under and over single warpv threads and single war threadspassing under and over single We t threads and an intermediate ortionhavin a Weaving structure of sing e weft threat s passing under and overa plurality of warp threads and each Warp thread passing under and oversingle weft threads.

i In testimon whereof I have signed this specification t is 12th da ofJanuar 1918.

.VILLI `M F. GR E.

